Design of (G+20) commercial structure with construction sequence analysis

Abstract

Multi-storied buildings have been analysed for years on the assumption that whole of the load is applied on the complete frame. Looking in to the mode of incidence of the load, it is evident that part of the load is applied in stages as the construction of the frame proceeds, whereas remaining part of it is imposed on completion of the frame. Due to architectural requirements some of the column are designed as floating column and ground floor is kept open for car parking. It is important to study the effects of loads due to construction sequence on critical members, such as floating column and other critical members to avoid global failure of the building. It is also important to check the deflections due to sequential load application as it may lead to catastrophic failure of structural or non-structural elements, if the deflection due to sequential load is exceeding permissible limits. In this study we are considering cycle time for floor to floor construction and non-linear behaviour of materials to design a (G+20) commercial structure with floating column and open ground storey by using ETABS.